Cal. Health & Safety Code § 12102.1
Any person who sells, gives, delivers or otherwise disposes of 20 pounds or less of smokeless powder, or one pound or less of black sporting powder, shall first obtain a statement from the person who purchases or otherwise receives such powder, which statement shall include:
(e) The driver’s license number, selective service card number, or other identifying information concerning the person purchasing or receiving the powder.
Any person furnishing a fictitious name or address or knowingly furnishing an incorrect birth date and any person violating any of the provisions of this section is guilty of a misdemeanor.